Incandescent electric lamp.



No. 797,593. PATENTED AUG. 22, 1905.

v A. W. W. MILLER.

INGANDESCENT ELECTRIC LAMP.

APPLICATION FILED SEPT. $1903.

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TTTTED @TrtTlEFS 7 T1 ALBERT \V. N. iT IILLER, OF SOUlH ORANGE, NETV JERSEY.

TNCANDIESCENT ELECTRlC LAMP No. 797,593. Specification of Letters Patent. Patented Aug. 22, 1905. Application filed September 3, 1903. Serial No, 171,828.

T whmn, zit nm con/ccrn: der 7L, which electrically connects with the Be it known that LALB'ERTTV. W. MILLER, sleeve the leading-in. wire, which is shown as a citizen of the United States, residing at l passing over the end of the neck and between South Orange, county of Essex, State of New I the part a and the sleeve. As appears from Jersey, have invented certain new and use- 1 Fig. 1, the cylindrical part of the neck 0, ful Improvements in Incandescent Electric which is of smaller diameter, is of consider- Lanips, of which. the following is a s ecilica able length and should be of such length as to tion. permit the cutting of the neck at this point The objects of this invention are to profor repairing the lamp. l/Vith the organizavideincandesccnt electric lamps of cheap and tion disclosed such cutting may be accomdesirable construction in which the neck of plished and the neck re-fused after repair the lamp may be cut for repairing either with without removal of the sleeve, although the or without removal of the contact-sleeve. sleeve may of course readily be removed by To this end the invention consists more cutting the wire 9 or fusing the drop of solder particularly in a special. construction of the 7)., and the same sleeve may readily be reneck of the bulb and combining with. it a placed after repair of thelamp has been comshort contact-sleeve. This sleeve is made pleted. removable, being detachably bound or Secured in the open end of the lamp-neck clamped on the neck, and associated with it by means of a suitable seating 71 of cement of is a special form of insulating disk or button. any appropriate character is an insulating hereinafter described. button, preferably of porcelain or of vitreous A further feature of the invention the character. On the under face of this button mode of forming the base contact or terminal is a hub j, which may be square or of other of the lamp, as will be hereinafter described. appropriate cross-section, preferably angu- In the accompanying drawings, Figure l is lar, to hold the button against turi'iing, and a view of the lamp with the neck end .in ionon its upper face formed an angular boss 7r, gitudinal section; Fig. 2, an elevation of the around which closely i it the edges of the corneck end of the lamp, and Figs. 3 and 4 are :respondingly-shaped opening in the end of the detached views of a special form of insulatsleeve. The button being lirmly seated the ing-button applied at the base of the lamp. effect is to lock the sleeve against rotation The lamp is formed with the ordinary inshould it be liable to turn because of insuffiternal. lcading-in-wire tube secured to the cient tension on the binding-wire g. In the neck at the extreme end. At the end and edge of the button are formed opposite extending for an ap n'opriate distance, as innotches m, through one of which passes the dicated at (1 the neck is of such diameter as leading-in. wire a, that extends between the to quite :fill the sleeve 1), there being preferneck of the sleeve and is secured to the sleeve, ably only sullicicnt difference in. diameter as inFig. 2. Projecting lmyond the boss 7c is between this part of the neck and the sleeve a smaller one 0, which may be of any crossto permit the ready placing of the sleeve over section, although it is shown as square, and the neck. The part c of the neck is of matein its face is a cavity p, preferably angular in rially less dian'ieter, forming a SllOUldtl'(Z,:Ll1(l cross-section, communicating with which is where the part c of reduced diameter joins a passage q, through which one of theleadingthe bulb the latter swells outwardly, 'forniing in wires extends and the outer end of which a shoulder c. The neck is therefore of two is secured by solder s, that fills the opening diameters, that of the part a adjacent the or cavity p and constitutes with the end of end being greatest and that of the part c bethe wire embedded in it the base-terminal of tween the bulb and a being materially less. the lamp. The cavity p being angular in The sleeve 7) is made of such length that its cros. section there is no possibility of this lower edge termii'iates .in or about in the piece of solder turning in the event that it plane of the shoululerdnnd isformed withproshould not adhere sufliciently to the surface j ecting lips or tongues], which being bent inof the cavity in the button. wardly under the shoulder (Z may be secured, The piece or drop of hardened metal 8 has as shown, by a binding-wire g. The tongues been calle( solder. Of course any approfare preferably formed with. shouldcrsj" to iniiate metal that may be softened or renretain the wire in place, and the ends of the dered fluid by heat applied as desired and wire are neferably secured by a drop of solthat then hardens on cooling may be used.

The face of the body of metal 3 is ground or turned off flat. The use of the smaller boss 0 in which is the cavity for this metal raises the base-contact above the boss 7c and obviates possibility of the boss 7c striking against the socketcontact.

I claim as my invention 1. An incandescentlamp bulb having a neck provided with a cylindrical inner portion formed with straight parallel sides connected to the bulb and a cylindrical outer portion of larger diameter connected to the inner portion of the neck by a shoulder, a contactsleeve enveloping only the outer portion of the neck and having parts engaging the shoulder and means for preventing the sleeve from turning.

2. An incandescent-lamp bulb having a neck formed with a cylindrical inner portion next the bulb and a cylindrical. outer portion of larger diameter connected to the inner portion of the neck by a shoulder, a contactsleeve enveloping only the outer end of the neck and having portions engaging the shoulder between the inner and outer portions of the neck, an insulating-button applied to the neck and engaging the sleeve to hold it against turning, a leading-in wire extending centrally through the button and a leading-in wire electrically connected with the sleeve.

3. An incandescent electric-lamp bulb having a neck formed with an inner part neXt the bulb and an outer part of larger diam eter connected to the other part of the neck by a shoulder, a button of insulating material secured to the base of the lamp and having a projecting angular base on its outer face, a sleeve having a corresponding opening embracing the base and which surrounds the upper or outer part only of the neck, devices carried by the sleeve engaging the shoulder formed between the outer part of the neck and the inner part thereof, and means for binding said projecting parts inside the shoulder.

4. In an incandescent electric lamp, the combination of the bulb, sleeve and leadingin wires, of an insulating-button, centrally apertured, formed with a projection extending into the open end of the neck, a boss 7c embraced by a correspondingly-shapedopening in the sleeve and a cavity p in its face, substantially as and for the purpose set forth.

5. An incandescent-lamp bulb combined with an apertured button cemented to its end and having a solder-receiving cavity, a contact-sleeve slipped over the button and locked to it against rotation, leading-in wires, one of which is electrically connected with the sleeve and the other of which passes through the apertured button, a hardened solder seated in the cavity in the face of the button and electrically connected with and securing one of the leading-in wires and means for securing the inner end of the sleeve to the neck of the lamp.

6. The herein-described insulating-button for the base end of an electric lamp, formed =on its inner face with a perforated projecting hub, and on its outer face with bosses of unequal cross-section, and the inner or outer one of which is formed on its outer face with a solder -receiving cavity communicating with the perforation in the hub for the purpose specified 7. In an incandescent electric lamp, the combination with the bulb and sleeve of an insulating-button secured to the base end of the lamp and formed with a solder-receiving 'cavity and with a boss to which the sleeve is locked, leading-in wires one of which is electrically connected with the sleeve and the other secured to a hardened solder seated in the cavity in the face of the button.

8. An incandescent-lamp bulb having a neck formed with a cylindrical inner portion having straight parallel sides and a cylindrical outer portion of larger diameter con nected thereto by a shoulder, a contact-sleeve enveloping only the outer end or larger portion of the neck and having tongues f bent to engage the shoulder and means for confining the tongues inside the shoulder.

In testimony whereof I have hereunto subscribed my name.

ALBERT l/V. IV. MILLER.

IVitnesses:

EDWARD C. DAVIDSON, KATHARINE MAQMAHON. 

